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Should anyone ever decide to make a show called "CSI: Geology," a group of scientists studying a mysterious and rapidly inflating South American volcano have got the perfect storyline.

Researchers from several universities are essentially working as geological detectives, using a suite of tools to piece together the restive peak's past in order to understand what it is doing now, and better diagnose what may lie ahead.

"I call this 'volcano forensics,' because we're using so many different techniques to understand this phenomenon," said Oregon State University professor Shan de Silva, a vulcanologist on the research team. [See images of the inflating volcano here.]

Researchers realized about five years ago that the area below and around Uturuncu is steadily rising — blowing up like a giant balloon under a wide disc of land some 43 miles (70 kilometers) across. Satellite data revealed the region was inflating by 1 to 2 centimeters (less than an inch) per year and had been doing so for at least 20 years, when satellite observations began.

"It's one of the fastest uplifting volcanic areas on Earth," de Silva told OurAmazingPlanet."What we're trying to do is understand why there is this rapid inflation, and from there we'll try to understand what it's going to lead to."

The peak is perched like a party hat at the center of the inflating area. "It's very circular. It's like a big bull's-eye," said Jonathan Perkins, a graduate student at the University of California, Santa Cruz, who recently presented work on the mountain at this year's Geological Society of America meeting in Minneapolis.

Scientists figured out from the inflation rate that the pocket of magma beneath the volcano was growing by about 27 cubic feet (1 cubic meter) per second.

"That's about 10 times faster than the standard rate of magma chamber growth you see for large volcanic systems," Perkins told OurAmazingPlanet.

However, no need to flee just yet, the scientists said.

"It's not a volcano that we think is going to erupt at any moment, but it certainly is interesting, because the area was thought to be essentially dead," de Silva said.

Uturuncu is surrounded by one of the most dense concentrations of super volcanoes on the planet, all of which fell silent some 1 million years ago.

Super volcanoes get their name because they erupt with such power that they typically spew out 1,000 times more material, in sheer volume, than a volcano like Mount St. Helens. Modern human civilization has never witnessed such an event. The planet's most recent supervolcanic eruption happened about 74,000 years ago in Indonesia. [Related: The 10 Biggest Volcanic Eruptions in History]

"These eruptions are thought to have not only a local and regional impact, but potentially a global impact," de Silva said.

Uturuncu itself is in the same class as Mount St. Helens in Washington state, but its aggressive rise could indicate that a new super volcano is on the way. Or not.

De Silva said it appears that local volcanoes hoard magma for about 300,000 years before they blow — and Uturuncu last erupted about 300,000 years ago.

"So that's why it's important to know how long this has been going on," he said.

To find an answer, scientists needed data that stretch back thousands of years — but they had only 20 years of satellite data.

"So that's where we come in as geomorphologists — to look for clues in the landscape to learn about the long-term topographic evolution of the volcano," Perkins said.

Perkins and colleagues used ancient lakes, now largely dry, along the volcano's flanks to hunt for signs of rising action.

"Lakes are great, because waves from lakes will carve shorelines into bedrock, which make lines," Perkins said.

If the angle of those lines shifted over thousands of years — if the summit of the mountain rose, it would gradually lift one side of the lake — it would indicate the peak had been rising for quite some time, or at least provide a better idea of when the movement began.

The local conditions, largely untouched by erosion or the reach of lush plant and animal life, lend themselves to geological detective work, Perkins noted.

"It's a really sparse, otherworldly landscape," Perkins said. "Everything is so well preserved. There's no biology to get in the way of your observations."

Perkins said that surveys conducted on the lakes last autumn didn't indicate long-term inflation. However, tilting lakes are only one indicator of volcano growth, he said.

De Silva said the geological detective team is working to combine data from a number of sources — seismic data, GPS data, even minute variations in gravity — to pin down when and why the mountain awoke from its 300,000-year-long slumber, and better predict its next big move.

About Me

I'm fortunate to have several passions in my life. I am absolutely an eco-nut. I am always trying to find new ways to reduce, reuse, recycle. We, as a species, have done more harm to this planet in the short time we have been here, than any other catastrophe or happening ever has. It's up to us to fix it.
I care about the environment whether it is as small as a single cell or as large as the universe.
I adore creativity and think we can all do more with much less. This earth has enough resources for us all to live comfortably if we all learn to share. Wasn't that a lesson we were supposed to learn in kindergarten?
I also love the bizarre, unusual, the weird and the strange. Be prepared for the odd "different" blog.

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